Filled-sack-sewing machine.



No. 771,618. vPATENTED OCT. 4, 1904.

M. C. ELLISON.

` FILLED SACK SEWING MACHINE.

` APPLICATION FILED IAN. I7. 190s.

www@

PATBNTED OCT. 4, 1904.

N 2mg. 2 A T N NN i, m WJ@ M. www m M mm m WNW HN A N im Q m. HM CN my.N J OGN n 0mm MMM BP LA u .F

,N 6, L wu d n m fw/ M m 5% N m, ,www

No. 771,618. PATENTED CCT. 4, 1904.

' M. C. ELLISON.

FILLED SACK SEWING MACHINE.

APPLICATION FILED JAN. 17I 1903.

No MODEL. 4 SHEETS-'snm a.

ANo. 771,618." l l -PATBNTBD 00114, 11904.

1 M. o. BLLIsoN.

AFILLED SACK SEWING MACHINE.

APPLIoATIoN FILED 111.11.17. 190s.

N10 MODEL. 4 SHEETS-S? EI 4.

' UNITED STATES Patented October 4, 1904.

PATENT OEEICE.

MILTON CURTIS ELLISON, OF ST. PAUL, MINNESOTA.

FILLED-SACK-SEWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 771,618, dated. October4, 1904.

Application filed January 17, l903.`

T0 all whom, it mm1/y concern:

Be it known that I, MILTON CURTIS ELLIsoN, a citizen of the UnitedStates, residing in St. Paul, in the county of Ramsey and State ofMinnesota, have invented a new and useful Filled-Sack-Sewing Machine,for which I ask that Letters Patent be granted to me, as set forth inthe annexed specification and drawings.

My present invention relates to filled-sacksewing machines, and isparticularly directed to the provision of approved means for feeding thefilled sacks to the sewing mechanism, and, further, to the provision ofimproved means for automatically cutting the thread.

To the above ends the invention consists of the novel devices andcombinations of devices hereinafter described, and defined in theclaims.

The invention is illustrated in the accompanying drawings, wherein likecharacters indicate like parts throughout the several views.

Figure l is a View in side elevation, showing the complete machine. Fig.2 is a transverse vertical section on the line m2 of Fig. 1. Fig. 3 is ahorizontal section taken on the line w3 w3 of Fig. 1. Fig. 4 is a detailin horizontal section on the line .fc4 of Figs. 1 Vand 2, some partsbeing broken away. Fig. 5 is a view in plan with some parts broken away,showing in detail the lower or bottom member of the three endlessfeed-belts of the sack-feeding device. Fig. 6 is a detail in section onthe line x w of Fig. 5. Fig. 7 is a detail in section approximately onthe line '.707 m7 of Fig. 9. Fig. 8 is a horizontal section on the lineaus m8 of Fig. 7. Fig. 9 is a horizontal section on the line fc 009 ofFig. 1, the parts beingshown on a somewhat enlarged scale and the lowerbelt of the sack-feeding device being indicated by dotted lines. Fig. 10is a transverse vertical section on the irregular line mi m10 of Fig. 1,the sack being indicated by dotted lines. Fig. 11 is a transversevertical section with some parts broken away and with others removed,taken on the line :nu m11 of Fig. 9. Fig. 12 is a vertical sectionshowing a portion of the machine, taken on the line m12 x12 of Fig. 11.Fig. 13 is a detail in side elevation, showing the thread-cutting seriaNo. 139,871. (mman.)

knives and their holders. Fig. 14 is asection on the line m w of Fig.13. Fig. 15 is a detail in section on line w15 00H of Fig. 12, showingthe actuating-wheel of the thread-cutter. Fig. 16 shows the saidactuating-wheel in side elevation.

All of .the parts of the machine are supported by a skeleton framework1, which at one side has an adjustable horizontally-disposed section 2.The said section 2, as sho wn, is rigidly clamped to the main frame 1 bybolts 3, but is adapted to be vertically adjusted by set-screws 4, whichwork through brackets 5 on said frame 1 and impinge on depending legs 6of the said frame-section 2.

Counter-shafts 7, 8, and 9 are journaled in suitable bearings on thelower portion of the frame 1, while counter-shafts 10 are mounted insuitable bearings on the adjustable framesection 2. As shown, one vofthe shafts 10 is mounted in adjustable bearings 10n on the said frame 2.The counter-shaft 7 carries a pair or' beveled gears 11 and a sprocket12. The counter-shaft 8 carries a large spur-gear 13, a pulley 14, andsprockets 15, 16, 1,7, and 18. The counter-shaft 9 carriessprocketwheels 19 and is provided with a fixed driving-pulley 2O and alooser idle pulley 21.

The sewing-machine proper-that is, the stitching mechanism-is indicatedas an entirety by the character a, and of the parts thereof it isdesirable for the purposes of this case to further note only the drivensheave or pulley a on its operating-shaft and guides o2, between whichthe gathered upper end of the sack is passed in the stitching operation.

This sewing' mechanism may be of any de- Sired or well-knownconstruction.

The two shafts 10, which are mounted in the frame-section 2, areprovided with pairs of sprockets 22, over which run sprocketchains 23,to which is secured a wide flexible belt 24. On its outer face the belt24 is provided with transverse cleats 25, which not only stiffen thebelt laterally, but give the same more positive feeding action on thesack. The intermediate portion of the belt 24 runs over roller-sections26, secured on the shafts 10 between the sprockets 22, as best shown inFigs. 4 and 10. The upper portion of the IOO belt 24 and the upperportions of the sprocketchains 23 run over a skid or horizontal support27, which lextends between the drumsections 26 and is rigidly secured tothe adjustable frame-section 2. The sides of the skid 27 rise above thechains 23 and are provided with guide-stri1')s 28, which guide-stripsproject inward over the said chains and over the edge of the lbelt 24and are beveled on the inner edges for a purpose which will hereinafterappear. One of the counter-shafts 10 (see Fig. 4) is provided with alarge sprocket 29, over which and the sprocket 17 on the coun ter-shaft8 runs a sprocket-chain 30. (1ndicatcd by dotted lines in Fig. 4 and byfull lines in Fig. 1.) A sprocket-chain 15 runs over the sprockets 15and 12 to impart-motion from the shaft 8 to the shaft 7.

For cooperation with the bottom feed-belt 24 described there is a pairof laterally-spaced side belts set edgewise in a vertical direction andarranged to engage the side of the filled sack. rl`hese endless sidebelts 31, like the belt 24, are secured to sprocket-chains 32 and areprovided with cleats 33 on their outer faces for an important purposehereinafter to be stated. r1`he sprocket-chains 32 run over thesprockets 34 of vertically-disposed shafts 35, mounted on suitablebearings 36 and 36u on the main frame 1. On the shafts 35, between thesprockets 34, are roller-sections 34, over which run the belts 31. Asshown, the two shafts at the right with respect to Figs. 1 and 9 aredirectly mounted in adjustable bearing-blocks 37, which in turn areseated in the bearings 36L and are subject to adjusting-screws 37. Theendless belts 31 and the chains 32 run against guideboards orbacking-strips 38, which are rigidly secured at their ends to thebearingbrackets 36 and 36, as best shown in Fig. 9. The two verticalshafts 35 at the left with respect to Figs. 1, 3, and 9 extend downwardinto suitable bearings on the main frame 1 and are provided with beveledgears 39, that mesh with the bevel-gears 11 of the countershaft 7.

ln the drawings the lilled sack, which by the three cooperatingfeed-belts 24, 31, and 31 are fed to the stitching mechanism, isindicated by the character Z, said sack` being indicated by dotted linesin Figs. 2, 9, and 10. While the sacks are held by the said three beltsand are being' fed forward to the stitchingI mechanism their Vupper endsare engaged and pressed down to a predetermined height by a concavepressing-roller 40, carried by a horizontally-disposed shaft 41, havinglat one end a sprocket 42. A sprocketchain 43 runs over the sprocket 42and over the sprocket 16 of the counter-shaft 8L ln Fig. 9 the threads,which extend from the sewcd sack Z to the stitching mechanism, areindicated by dotted lines, (marked 2Q) and these threads are adapted tobe cut at the proper time by the shearing action of a pair ofreversely-movable chisel-like knives 44, which are carried by holders45, which holders are of plunger-like form and are mounted to workthrough bearings 46, shown as secured on the upper edges of theguide-boards 38 hereinbefore described. Said knives and their holdersare shown in detail in Figs. 13 and 14, by reference to which it will benoted that the sharpened edges of said knives are beveled in the samedirection and are provided at their side edges with reversely-projectingflanges 44. The ends of the iianges 44 are cut olf in line with thebeveled edges of the said knives, so that when the knives are forcedtogether the said iianges engage in advance and insure the lapping overof the said knives. To permit this overlapping action of the knives,they must of course be made somewhat flexible. The knives are preferablymade adjustable in their respective holders, and hence are, as shown,made subject to set-screws 45, which are screwed through webs of thesaid holders, as best shown in Figs. 13 and 14. The innermost holder 45is longer than the outer holder and besides working through the bearings46 works also through a bearing 47 on the main frame 1 and is yieldinglypressed into a retractd position, or toward the right with respect toFig. 11, by means of a quite strong' bow-spring 48, one end of which, asshown` is attached to said holder and the other end to one of thebearings 46. The

movement of said holder toward the right is,

as shown, limited by a collar 49 on the said holder, which normallyengages the said bearing 47. The two holders 45 are connected forreverse movement by means of a pair of levers 50, an intermediate lever51, and a connecting-roel 22, which parts are preferably arranged asbest shown in Fig. 11. The projecting end of the innermost holder 45 hasattacheol to it a pivoted finger 53, which works endwise and laterallyin a suitable seat forming a bracket 54 on the main frame 1, as bestshown in Figs. 9 and 11. The free end of the pivoted finger 53 isoperated upon by a rotating wheel or disk 55, which is carried by acounter-shaft 56, journaled in bearings 57 on the main frame and, asshown, provided with a pulley 58. A belt 59 runs over the pulley 58 andover the pulley 14 of the counter-shaft 8 to transmit motion from saidshaft 8 to said shaft 56. The actuating-wheel 55 is formed on one facewith radiating driving-lugs 60 and radially outwardly therefrom withcamsurfaces 61, which lugs and cam-surfaces operate on the free end ofthe linger 53 in a manner which will appear in the description of theoperation.

As' one feature of this invention a threadcutter is tripped into actionby a trip which is arranged to be directly engaged by the body ofthelilled sack. This trip is preferably in the form of a hinged plate62, which nor- IOO IOS

mally projects into the path of lmoverfu-nt of the filled sack, the samebeing, as shown. in Figs. 2, 7, 8, 9, and 11, hinged to one of the innerguide-boards 38. A rod 63 'connects the free edge of the tripping-plate62 to one arm of the bell-crank 64, pivoted to a bracket 65 on the mainframe 1. The other arm of the bell-crank 64 is connected to the lowerend of a lever 66, which is, as shown, pivoted to a bracket 67 on themain frame, as best shown in Fig. 12. The upper end of the lever 66 isconnected by a coiled spring 68 to one end of a plunger 69, which ismounted to slide in a bearing 7 O on one ofthe horizontal bars of themain frame. To the inner end of the plunger 69 is pivoted a trip-finger71, which by a coiled spring 72 is normally held,

1 as shown in Fig. 9, against a stop 73, projected from one of thebearings 57.

Motion vis transmitted from the countershaft 9 to the counter shaft 8through a sprocket-chain 74, which runs over one lof the sprockets 19and over one of the sprockets 18. It will be noted that the severalsprockets 18 and the several sprockets 19 are in reverse conicalarrangement, so thatthe speed of the shaft 8 with respect to the speedof the shaft 9 may be varied by shifting the chains 74 from one to theother Vof the cooperating lined sprockets 18 and 19.

The sewing or stitching mechanism receives motion `througha belt 75,which runs over the sheave a', heretofore noted, over guid e-sheaves.76, suitably mounted on the main frame 1, and over a largedriving-sheave 77. The sheave 77 is secured on the short counter-shaft78, journaled in suitable bearings on the main frame and provided withaspur-pinion 79,.

which meshes with the large gear 13 of the counter-shaft 8.

Operation: As already indicated, the filled* sacks are held in averticalposition and fedgforward to the stitching mechanism-by the combinedaction of the three endless belts 24 and 31. The vertical cleats on thebelts31 press slightly into the sides ofthe sack, and thus securely holdthe sack in a proper upright position. rlhe three belts must of coursemove at the same rate of speed. rlhe filled sacks are delivered by handor otherwise to the receiving end of Vthe feed device afforded,

height for delivery between the guidepieces a2 of the sewing mechanismand furtheradjusts the top of the sack so that it may be sewed close tothe top of the sack-filling. Just after the filled sack has been sewedand when it reaches a position indicated approximately in Fig. 9 it isbrought directly into contact With the tripping-plate 62. therebyforcing the same outward. Then the tripping-plate 62 is forcedoutward,the plunger 69 is, through the spring' 68, lever 66, bell-crank64, and rod 63, forced toward. the right with respect to Figs. 9and 12.Then the plunger 69 is forced toward the right, its finger 71'engagesthe finger 53 and forces the latter laterally, so that its free endstands in the path of movement of the tripping-lugs of the wheel 55.When one of the lugs 6() of the said wheel engages the free end of thefinger 53, it forces .the same endwise and through the connectionsalready described forces the cuttingknives44 together and severs thethreads of the sack which has just been sewed.. The

.knives are held together only for an instant, the same being releasedas soon as the opering-lug it is engaged by one of the cam-surhowever,be held from return movements to normal positions for some little timeby the continued engagement of the filled sack with the tripping-plate62; but the return movements of the finger 53 and of the thread-cuttingknives and intermediate parts take place instantly upon the release ofthe finger 53 -from the driving-lugs 60, which has forced the same intoaction. Under this return moveforces the same laterally against thetension of the spring 72. When the sack has been carried past thetripping-plate, the latter is released, and the spring 62a then becomesoperative to throw the said tripping-plate and connected parts to normalpositions. (Indicated in Fig. 9.)

Itwill of cou-rse beunderstood that the machine above described iscapable of modication within the scopeof my invention as herein setforth and claimed.

I claim-- 1. .In a machine of the character described, .afeed device forthe filled sacks comprising three endless feed-belts that travel at vthesame.

. speed, one engagingwith the bottoms of the filled sacks andsustaining. the weight of the same, andthe other two engaging with the fsides of the filled sacks and having vertical cleats which increase theability of. saidtwo .latter feed-belts to hold said sacks in uprightposition, substantially as described.

I2. lIn a vmachine of the character described, a feed device for thefilled sacks comprising IIO three endless feed-belts, one engagcablewith the bottoms of the filled sacks and sustaining the Weight of thesame, and the other two engageable with the sides ofl the filled sacksand holding the sacks in upright positions, and beveled guide-stripsoverlying and following closely the edges of the upper portion of thebottom member of said endless belts, substantially as described, and forthe purposes set forth.

3. In a iilled-sack-sewing machine, the combination with stitchingmechanism and a feed device for feeding the filled sacks to saidstitching mechanism, of a packing-roller operating on the tops of thelilled sacks While they are being conveyed to said stitching mechanismby said feed device, said packing-roller serving to press the tops ofthe filled sacks so that their unsewed ends may be properly delivered tosaid stitching mechanism.

4. In afilled-sack-sewing machine, the combination with a stitchingmechanism, ofl a feed device for the filled sacks comprising threeendless feed-belts movable at the same speed, one engageable with thebottoms of the filled sacks and sustaining' the weight of the same, andthe other two engageable With the sides of the sacks and holding thesame in upright positions, and a concave packing-roller located foraction on the top of the sacks While they are being conveyed to saidstitching' mechanism by said feed device, substantially as described.

5. In a filled-sack-sewing machine, the combination with a stitchingmechanism and feed device for feeding the sacks thereto, of athread-cutter comprising an actuating-Wheel, means for rotating saidWheel, and a trip for rendering said actuating-Wheel operative, saidtrip including a tripping-plate which is located in position to bedirectly engaged by the filled sacks, While said sacks are receivingmovement from said feeding device, substantially as described.

6. In a fillcd-sack-sewing machine, the cornbination with stitchingmechanism and a feed device for feeding the filled sacks thereto, of apacking device operating on the tops of the filled sacks while they arebeing' conveyed to said stitching mechanism by said feed device, saidpacking device serving to press the tops of' the filled sacks so thattheir unseWed ends may be properly delivered to said stitchingmechanism.

7. In a iilled-sack-sewing machine, the combination with a stitchingmechanism and means for feeding the filled sacks thereto, of' athreadcutter comprising a rotating Wheel having driving-lugs andcam-surfaces, coperating knives, one ofI which is movable and isconnected to a pivoted trippingfinger, which tripping-finger receivesendwise motion from the driving-lug and is tripped laterally out ofaction by the cam-surface of said actuating- Wheel, and a tripping plateor head located in the path of the filled sack and connected With `thesecond tripping-finger which operates on the aforenoted tripping-fingerto force the.

same into a position Where it will be struck by the driving-lug of saidactuating-Wheel, substantially as described.

MILTON CURTIS ELLISON.

Witnesses:

JOHN E. HAGLIN, GRANT T. ELLIsoN.

